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Finding the Fourth Proportional to 368,889.20, 553,333.80 and 316,401.20

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Solution

The fourth proportional to 368,889.20, 553,333.80 and 316,401.20 is: 474,601.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,889.20 : 553,333.80 = 316,401.20 : x
  2. Step 2: Convert to fraction form
    368,889.20/553,333.80 = 316,401.20/x
  3. Step 3: Cross multiply
    368,889.20x = 553,333.80 × 316,401.20
  4. Step 4: Simplify right side
    368,889.20x = 175,075,478,320.56
  5. Step 5: Solve for x
    x = 175,075,478,320.56/368,889.20
  6. Step 6: Final answer
    x = 474,601.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.